<template>
  <div class="todo-footer" v-show="total">
    <label>
      <input type="checkbox" :checked="IsAll" />
      <!-- @change="CheckthisAll" -->
    </label>
    <span>
      <span>已完成{{DoneTotal}}</span> / 全部{{total}}
    </span>
    <button class=" btn btn-danger" @click="Cleantodo">清除已完成任务</button>
  </div>
</template>
<script>
  export default {
    name: 'MyFooter',
    props: ['todos'],
    computed: {
      total() {
        return this.todos.length
      },
      DoneTotal() {
        let done = this.todos.filter((todo) => todo.done == true)
        return done.length
      }, IsAll: {
        get() { return this.total === this.DoneTotal },
        set(value) {
          this.$emit('CheckAll', value)
        }
      }
    }, methods: {
      CheckthisAll() {
        this.$emit('CheckAll')
        // this.CheckAll(e.target.checked)
      },
      Cleantodo() {
        this.$emit('CleanDone')
      }
    }

  }
</script>
<style scoped>
  /*footer*/
  .todo-footer {
    height: 40px;
    line-height: 40px;
    padding-left: 6px;
    margin-top: 5px;
  }

  .todo-footer label {
    display: inline-block;
    margin-right: 20px;
    cursor: pointer;
  }

  .todo-footer label input {
    position: relative;
    top: -1px;
    vertical-align: middle;
    margin-right: 5px;
  }

  .todo-footer button {
    float: right;
    margin-top: 5px;
  }
</style>